Pha Nok Khao (Thai: ผานกเค้า, pronounced [pʰǎː nók kʰáw]) is a tambon (subdistrict) of Phu Kradueng District, Loei Province.

Pha Nok Khao is well known as "Gateway to Phu Kradueng", a well known natural attraction of Loei Province.

Pha Nok Khao is a local steep cliff that resembles an owl.

It is bounded by other areas (from the north clockwise): Pha Khao in its province, Si Bun Rueang of Nong Bua Lamphu Province and Si Chomphu of Khon Kaen, Huai Som and Phu Kradueng in its district.

[4] Subdistrict Administrative Organization Pha Nok Khao (SAO Pha Nok Khao) governs areas beyond the jurisdiction of the Phu Kradueng Subdistrict Municipality.